A simple WordPress post list

post-list.php

?php
/**
 * Displays a list of posts
 *
 * @package Pointhacks
 */
$post_list_title       = get_query_var( 'post-list-title', 'Post list' );
$post_list_klass       = get_query_var( 'post-list-klass', 'post-list--default' );
$post_list_posts       = get_query_var( 'post-list-posts', null );
$post_list_post_format = get_query_var( 'post-list-post-format', '' );
if ( empty( $post_list_posts ) ) {
	return;
}
?>

<section class="post-list <?php echo esc_attr( $post_list_klass ); ?>">
	<h3 class="post-list-title">
		<span class="text"><?php echo esc_attr( $post_list_title ); ?></span>
	</h3>
	<div class="post-list-items">
		<?php
			foreach ( $post_list_posts as $post ) {
				get_template_part( 'template-parts/post/post', $post_list_post_format );
			}
		?>
		<div class="dfp-holder" id="div-gpt-ad-1516334663117-2"></div>
	</div>
</section>